YANMAR

TRANSMISSION-KM SERIES 207
Neutral hole
I
h. Tighten the nut (left-hand threads) to the torque
specified in Table 2.
i. Make sure the gears rotate freely.
j. Stake the nut to lock the nut in place.
Shifter (KM2A, KM2C and KM3A models)
Refer to Figure 20.
1. Ifnot previously removed, detach the cotter pin and remove
the actuator from the shift lever.
2. Remove the shifter.
~eutra'l notch
NOTE
Make alignment marks on the shift lever and
shift shaft so the shift lever can be reinstalled
in its original position.
3. Loosen the clamp bolt and remove the shift lever.
I t 5 mm (0.20 in.)
a. If reinstalling the original clutch cone, install it in its
original position-forward end toward the forward
gear.
b. Install the pin before installing the inner roller bearing
race.
c. Use a suitable tool or sleeve to drive the inner roller
bearing race onto the shaft. Do not use excessive
force. Drive the race onto the shaft until it bottoms.
d. Use a suitable tool or sleeve to drive the tapered
roller bearing onto the shaft. Do not use excessive
force. Drive the bearing onto the shaft until it bottoms.
e. On KM2P and KM3P transmissions-Install the
spring cups so the cupped side is toward the gear.
f. Install each thick thrust washer so the stepped side
is toward the tapered roller bearing.
g. Install the washer so the pin in the output shaft fits
in the groove in the washer.
NOTE
The setscrew and plug contain the springs
and mayfly out.
4. Remove the setscrew and plug, then remove the
springs and detent pins.
5. Remove the shifter shaft.
6. Remove and discard the O-ring.
7. Use a screwdriver or suitable tool to pry out the seal.
Be careful not to damage the bearing.
8. Inspect the bearing. If it is faulty, replace it as follows:
a. Heat the shifter body to 2 12O F (1 00° C), then drive
out the bearing.
b. Install the new bearing with the stamped end out.
Push in the bearing until it bottoms.
9. Inspect the shift shaft. Check the detent portion of the
shaft for cracks or excessive wear that will allow poor
clutch engagement. The ramps should be smooth and the
neutral detent hole should be unworn (Figure 21).
10. Inspect the detent pins. Replace the pins if they are
damaged or excessively worn.
11. Inspect the springs for deformation or other damage.
Specified spring free length is 34 mm (1.34 in.).
12. Inspect the shifter for damage and excessive wear.
Measure the shifter width and shaft diameter. Replace the
shifter if the measurements exceed the specifications in
Table 6.
13. Check the internal movement of the actuator. The actuator.should
slide without binding. To check spring tension,
attach a spring scale to the threaded end of the
actuator and measure the spring tension when the actuator
rod is pulled 5 mm (0.20 in.) from the end of the tube (Figure
22). Ifthe spring tension is not as specified in Table 6,
replace the spring.